CVE-2024-35785 tee: optee: Fix kernel panic caused by incorrect error handling

2024-05-1712:24:28

Linux

www.cve.org

linux kernel

vulnerability

tee bus

error handling

kernel panic

bug fix

optee

6.4 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

10.3%

JSON

In the Linux kernel, the following vulnerability has been resolved:

tee: optee: Fix kernel panic caused by incorrect error handling

The error path while failing to register devices on the TEE bus has a
bug leading to kernel panic as follows:

[ 15.398930] Unable to handle kernel paging request at virtual address ffff07ed00626d7c
[ 15.406913] Mem abort info:
[ 15.409722] ESR = 0x0000000096000005
[ 15.413490] EC = 0x25: DABT (current EL), IL = 32 bits
[ 15.418814] SET = 0, FnV = 0
[ 15.421878] EA = 0, S1PTW = 0
[ 15.425031] FSC = 0x05: level 1 translation fault
[ 15.429922] Data abort info:
[ 15.432813] ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000
[ 15.438310] CM = 0, WnR = 0, TnD = 0, TagAccess = 0
[ 15.443372] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[ 15.448697] swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000000d9e3e000
[ 15.455413] [ffff07ed00626d7c] pgd=1800000bffdf9003, p4d=1800000bffdf9003, pud=0000000000000000
[ 15.464146] Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP

Commit 7269cba53d90 (“tee: optee: Fix supplicant based device enumeration”)
lead to the introduction of this bug. So fix it appropriately.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/tee/optee/device.c"
    ],
    "versions": [
      {
        "version": "a953e45ebeae",
        "lessThan": "bc40ded92af5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "01c13d8a95e0",
        "lessThan": "4b12ff5edd14",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1c9561b438cb",
        "lessThan": "e5b5948c769a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "d3c4786b01aa",
        "lessThan": "520f79c110ff",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7269cba53d90",
        "lessThan": "bfa344afbe47",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7269cba53d90",
        "lessThan": "95915ba4b987",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/tee/optee/device.c"
    ],
    "versions": [
      {
        "version": "6.7",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.7",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.10.215",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.154",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.84",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.24",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.7.12",
        "lessThanOrEqual": "6.7.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]